Crushing machinery



Jan. 20, 1931. e; w. BORTON CRUSHING MACHINERY Filed Dec. 12, 1929 3Sheets-$heet l mvriuron:

G RGE W. Bum-om Jan. 20, 1931. a. w. BORTON 1,789,539

' CRUSHING MACHINERY Filed Dec. 12, 1929 5 Sheets-Sheet 2 INVENTOR Gunner. W. B0 on.

Jam 20, 1931. s. w. BORTON I CRUSHING MACHINERY Filed Dec. 12, 1929 3 Sheets-Sheet 3 INVENTORI Gamma W Boa.

surface with which the hammers cooperate, of the material being crushed or reduced, I

provide removing means in the form of scra ing blades 10, arranged to pass over the brea er plate or the breaking surface. In the. form illustated in Figs. 1 and 2, the scaping'blades are ca'rriedjbyfrock shafts 11,.which may be suitably. mounted'or journaled in the support 2 forthe flat breaker late or'the walhand these rockshafts may e" driven inlanytsuitable manner; separately driven if desired, or

driven in unison as the case may be. For this purpose these shafts may be provided with pinions'12, which may engagedby rack the respective blades to an ext set in:opposite positionswith respect to each other so that when they are rocked one blade willdes'cribe an arc of 180 in one'direction and the 'otherbladewill describe a similar arc in the opposite direction. This scrapin action will serve to keepthe breaker plate 0 ean throughout the majorportion of the same, *while it is possible that masses'of the material maypbuildup inthe substantially V-shaped s0 spaces between the paths of the scra ing blades, it is believedfth'at such masses- Wi 1 be broken down by: the oncoming material Iduringoperation of the machine. 1

, Other arrangements ofthe scrapingv blades may beemployed, and in Figs; .3 and 4., I have hownrformsof depending bladeswhichare mounted near the top of the substantiallyflat at 4 and 4'? respectively. In the arrange; mentl'llustrated in Fig. 3,.two blades 10 may be mounted uponshafts 11 which maybe v journale'd in the upper part of the breaker plate or breaking surface 4, and these blades are arranged to sweep. across the breaker plate; coveringfintheir-action the major por-. tionof thes'ame. These blades are preferably set withrelation to each other in the position indicated in Fig.3, so that in their'scraping v movements they follow each other just out of contact. While theirscraping action will leave a sma'll portion'of the breakerplate near thel'ower portion of the same untouched, this portipn' is directly. in thepath of the oncoming material, and there willbe little-tendency ofthes'ticky portion thereof to build up uni the arrangementillu'stratedin Fig. 4, 8. :jsingle blade 10 may be set centrally with respectto the upper portion of the breaker plate or b'reakingsurface", and may be carried by afshaft 11?..- Thesliaft may-herockedso, as to 7 move this blade back and forth overlthelo'wer portion of the breaker plate or breaking'sur-;

face bymeans similar-Itothose employed in breaking structures.

Other arrangements of the scraping blades connection with the rock shafts of the other are illustrated more or less diagrammatically in Figs ..5, 6, 7 and 8. In F-ig. 5, I have shown a pairof blades 10 carried by rock shafts 11,

vin substantiallyfthe same manner as those illustratedin Fig. 3, exceptingthatth'e supporting rock shaftsby which motion is impartedtosaid bladesare mounted above the continuously rotated, in either'direction, for.

the purposeof keepingsuch breaking surface relatively free from the mud or slimy portions of the material undergoing crushing and tendingto build upon said breaking surface. In Fig. 8, I have also shown a single scraping blade 10 which may bemounted on a rock shaft 11 disposed 'at one corner of the breaking surface 4 preferably a lower corner, andinthe resent instancesuclh blade is shown as pivota 1y mounted at the lower right hand corner. The broken lines indicate the es illustrated in Figs. 5,6, 72/116. 8.

range of movement of the several scraping By preference, the blades have a cross sectionsubstanti'allylike that illustrated in Fig. 9, being rounded onto as indicated at a and edges and mergingwith the concave under side of the blade. It will beunderstood, how ever, that I donot wish to be limited to this particular form ofrblade, since other'forms' may be employed without departing from my 7 invention {theimpoftant point being to pro-,

videsuitableforms of scraping blades which. maybe-.movedacr'oss the breaker plate and having side cutting "e gesaf the under sur breaker plate oi-f'breaking surface, indicated face being inclined-away from. said cutting prevent objectionable "accumulation of the a sticky (Jr-slimy P t on (or portions) bf th material operatedu fi g I 1. The combination, in crushing machinery,

of a rotor structure having hammers, a surface against which material undergoing crushing may be thrown by the action of'said hammers, and a scraper blade movable across surface. v

2. The combination, in crushing machinery of the rotary beater type, of a rotor structure the faceof said breaking having hammers, a breaking surface against wh ch material undergoing-crushing may be thrown by the action of the hammers, and

pivotally mounted scraper blade movable across the face of said breaking surface. 3. The combination, 1n crush ngmachim cry, .of a rotor structure having hammers, a

' breaking surface against which material unfdergoing crushing may bethrown byf'the' thrown by the 'action of said hammers, a-pivbreaking surface out, offcontact with each action of saidhammers, and a plurality of; scraper blades'movable across the face of said other. k 4. The combination, in vcrushing machinery of the rotary beater type, of a rotor structure having hammers, a; breaking surface against whlch-materlal undergoingcrushing may be;

thrown by the action of said hammers, and a plurality ofpivotally'mounted scraper blades movable across the face of said breaking sur face out of contact with each other.

1 5. The combination, in crushing machinery otally mounted scraperblade movable across independent rock shafts supporting said tosaidrock shafts. I 1

. 11. The combination, in'crushing machineryvof the rotary beater type, of. a rotor struc V ture having hammers, a breaker plate against v-whichmaterial undergoing "crushingmay be I thrown by the action ofsaid hammers, a pluralityj'of pivotally, mounted scraping blades 7' [movable across the face of said breaker plate, independent rockshafts supporting, (said blades,pi'nions carried by said rock shafts,

and areciprocating 'rack bar in engagement "withflsaid pinions for rocking said shafts. ,Inwitness whereof I have signed thisspeci- "GEORGE w; BoRToN; f j i 3 fication.

the face of said breaker plate, and a rock shaft 7 supporting said blade.

, '6. The combination,incrushingxmachinery a 1 of the rotary beater type, of a rotor structure having hammers, a flat inclinedbreakerplate and a rockshaft supporting said'blade- 7. The combination, in crushing machinery" v of the rotary beater type,of a rotor structure II having hammers, a fiat inclined breaker plate a U against which material undergoingcrushing r V may be thrownby the action of said'hammers, Y i i a plurality] of pivotally mounted scraper blades movable across the-face'of saidinclined I *breaker plate, and independent breaker plate'against which material under going crushing mayrbe thrown by the action of said hammers,a pivotally mounted scraper 7 blade movable across-the-face of saidbreaker plate, a rock shaft supporting said blade, and j .means for imparting movement to said rocksupporting said blades; 5

rock shafts The comb-Damon, r shing machi'n- I 7 if cry, of a rotorv structurehaving hammers, a"

shaft. 7

"i -9. The combination, incrushing machinery against which material undergoing crushing Q I F maybe thrown by the actionofsaid hammers,lff a pivotally mounted scraper blade "movable acrossthe face of'saidinclined breaker plate,

of the rotary beater type, of a rotor structure having hammers, a breaker plate against 5 Ywhich material undergoing crushing may be thrown bythe action of said hammers, a piv- 7 otally mounted scraping blade movable across v the face of'saidbreaker'plate, a rockshaft' supportingsaid blade,and means forimpart-Q ingmovement tosaid rock shaft;

- 10. The'combinat1on,1n

e ania: g eryQf the rotary beatr type, of a-r g I L I I v f ture'having'hammers, a breaker plate against f e I which material undergoingcrushingmaylbe 1 l- 1 "fthrewn by the action 'ofthe jhammers ,a pluo "rality of pivotally mounted scraping blades. j movable across the face of said breaker plate," e

blades, and means forimpartingmovement 

